Environmental groups say the EPA’s allegations are particularly troubling because the Nevada Environmental Protection Division has been inspecting the mines for years without finding any major violations. Bonnie Gestring of the environmental group Earthworks, says the EPA’s allegations are particularly troubling because the Nevada Environmental Protection Division has been inspecting the mines for years without finding any major violations.

By all accounts, the plan to put a nuclear waste repository at Yucca Mountain is all but dead. The new president has said it is not safe to bury radioactive material 90 miles northwest of Las Vegas. Senate Majority Leader Harry Reid, who has chipped away its funding for years, has vowed to zero out its budget this year.

Federal officials failed to resolve year-old concerns about effects on wildlife and renewable energy development before designating routes for new power lines and pipelines in Nevada, environmentalists say.

Artificial turf has been billed as the cure for the Las Vegas Valley’s addiction to grassy eye candy. But while it’s water-saving prowess is unquestionable, there is a temperature problem with the emerald green lawn substitute.

A so-called "green" economy could create more than 19,000 manufacturing jobs in the Las Vegas Valley, according to business leaders, a steelworkers and environmental groups that are hosting a town hall meeting here Tuesday.

Four of the nation's largest residential builders have agreed to pay $4.3 million - including $182,000 to the state of Nevada - in a settlement with the U.S. Environmental Protect Agency for alleged violations of the Clean Water Act.